Measurements show that the energy of a mixture of gaseous reactants increases by 270.kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that −195.kJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction in kJ. Is the reaction exothermic or endothermic.

Chemistry
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Measurements show that the energy of a mixture of gaseous reactants increases by 270.kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that −195.kJ of work is done on the mixture during the reaction.

Calculate the change in enthalpy of the gas mixture during the reaction in kJ.

Is the reaction exothermic or endothermic.

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